Setting up voltage setpoint for THC

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Setting up voltage setpoint for THC

Postby P0ppy » Mon Feb 07, 2022 1:41 pm

God bless You,
when I turn on plasma torch and it moves around workspace, Proma THC 150 displays values between 98 and 102 V. Do I have to set up 100 V as voltage setpoint for THC?
Sincerely,
P0ppy
P0ppy
 
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Torch isn't working after enabling THC function in Mach3

Postby P0ppy » Tue Feb 08, 2022 11:22 am

When THC function is enabled by clicking "THC" button in Mach3, torch lowers itself down, jet starts cutting and then everything stops. Torch doesn't move, jet doesn't cut. By the way, only THC UP and THC DOWN outputs are connected to AXBB-E. What should I change in Mach3 or Proma THC 150?
P0ppy
 
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Re: Setting up voltage setpoint for THC

Postby Greolt » Tue Feb 08, 2022 10:24 pm

Do you have "Arc OK" setup?
Greolt
 
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Answer to Greolt's post

Postby P0ppy » Wed Feb 09, 2022 5:52 pm

No. I will connect it too.
P0ppy
 
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What parameters for Proma THC 150 and SheetCam?

Postby P0ppy » Mon Feb 14, 2022 5:35 pm

So, I have setup "ARC Ok" output. During cutting torch moves up and down for a while.
Then torch doesn't cut or move and measured voltage in THC rises until 3 hyphens show up.

Here are Proma THC 150 parameters:
- delay time: 1 s,
- hysteresis voltage: 2 V,
- high voltage (voltage of main/cutting arc): 200V.

And SheetCam parameters:
- feed rate: 1500 mm/min,
- pierce delay: 0.5 s,
- plunge rate: 1250 mm/min.

Material thickness is 2 mm. I think I should change pierce delay and delay time.
What else (if anything) must I change to make torch cut with reaction to detected height?
By the way thank You, Greolt, for hint.
P0ppy
 
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